Hand-lamp.



C. HMBUECHEN.

HANS LAMP. APPLicMloM min SEPT. 30. 191e.

Patented Apr. L, El?.

' nection with ring 17 when cap 12 is screwed lower-most turn of spring 11 is gripped to hold that spring in position and secure electrical connection therewith and having integral tangs :20v which are passed through slots in an insulating disk 21 of fiber, or the like, and there clenched down between that disk and a second inipert'orate tiber disk 22, whereby metal cap 12 is lined and insulated from the tangs.

'Plate 1b has its ends swaged to yieldingly engage andestablish electrical conup tight on collar $3, but the plate moves out ot' engagement with ring 17 when the4 cap is unsci'eu'ed a turn or two, and these parts therefore constitute a switch mechanism whereby the circuit 'from the battery to the lamp may be interrupted irrespective ot' the position of thumb piece 15, whereby the other or primary switch mechanism of the lamp is controlled to switch the lamp on or off as desired.

In order that cap 12, after being partly unscrewed trom sleeve"f3, may not4 accidentally lcome oli' entirely, or be accidentally screwed lip-again 'far enough to establish contact between plate 18 and ring 17 and particularly that the user may know when the cap has' been unscrewed far enough to open the auxiliary switch mechanism and render thumb piece 15 ineffective for lighting the lamp even accidentally,

there is provided a spring finger 23 of wasting the battery energy 'vevtent shifting of' thumb piecey lo,

metal riveted to disk Q1 and having its free yielding end projecting outward for engagement with a recess in ring 17. This recess may be in the form of a notch 24 (Fig. 7) cut in th bottom edge of the ring, or may be a notcli or indentation 25 (Fig. 4) on the inner face ot the ring. ln either ease the spring and recess are so 'positioned that after cap 12 has been unscrcwed tar enough to open the auxiliary switch mechanism, spring finger 2? will enterI the recess et ring 17, thereby forming in effect a lock to prelvent accidental rotation ot' the cap either forward or backward. lVith the auxiliary contact mechanism thereby locked in open position, the battery hand lamp .may be subjected to rough usage and carried about in a tool kitl and in contact. with metal tools without danger ot lighting the lamp and through inadand without danger ot short-circuiting the battery on itself or through the lamp, because of contact ot these metal tools with exposed metal paris of the construction.

ln the modification illustrated in Fig. 8, the tubular casing Q6, wherein the batteries are housed, is ot metal having at its ends threads 27 pressed therein to serve in place of the sleeves Q and 3 of Fig. 1. The thumb piece 2S may in this modification slide directly on metal tube 26 through which connection is established to the lamp by way of the reflector, as will rbe understood, but other features of this modification, including the sliding contact finger 29, the insul'ated contact ring-member 30, and the other cooperative parts, are the same as illustrated in Fig. 2 and described above.

1. In a battery, hand lamp, the combination of a tubular casing, a battery therein comprisiner va lurality of dry cells arranged end to end, a amp having one terminal connected with u said battery, connections between the other terminal of said lamp and said battery, said connections including two switch mechanisms arranged in series, either of which may be operated to interrupt the flow of current from said batter to said lamp one of said'switch mcchamsmshaving an actuating thumb-piece on the side of said tubular casing and the other having a lock to hold itin open position.

2. In a battery hand lamp, the combination of a casing, a battery therein, a lamp to be supplied with current from said buttery, a thumb-piece on said casing, switch mechanism between said battery and said lamp and comprising a finger within said casing and extending longitudinally thereof, said finger being movable by said thumbpiece to open the circuit to the lamp, and means for opening lthe battery circuit at another point when desired to prevent accidental lighting of the lamp by inadvertent movement of said thumb-piece.

E In a battery hand lamp, the combination of a tubular casing. a battery therein comprising a plurality of dry cells arranged end to end, a lamp having one terminal contacting with a battery terminal, and switch mechanism for connecting the other lam terminal to the remaining battery termina said mechanism comprising a Contact finger and two contact. members, said Contact tingcr being normally connected with a lamp terminal and extending and moving longitudinally of said casing,` said finger and one ot said members being movable into engagenient with the other contact member to complete the circuit trom the. battery to thc lamp.

l. ln a battery hand lamp, the combination ot a tubular casing, a cap secured to one end of said iasing, a collar secured to the other end thereof, a lens and a reflector clamped between said collar and the adjacent casing end, a lamp threaded into said retlector, a battery within saidcasing and having one terminal connected with the inner terminal of said lamp, and switch mechanisin between the other terminal of said I a 'battery and Said reflector, said mechanism comprising a thumb-piece movable on said casing, a contact finger electrically connected with said reflector and movable with 'loV l :tititiraiawd lio tion of a tubular casing having a threaded metal end, a metal cap threaded to one of said ends,l a collar threaded to the other of said ends, a lens and a reflector clamped be tween said collar and its threaded end, a lamp threaded into said reflector, a battery within said casing and having one terminal contacting with the inner terminal of said lamp, and switch mechanism between the other terminal of said battery and said rellector, saidlmeehanism comprisinga thumbpiece slidingly mounted `on' said tubular casing and electrically connected with said reflector, a contact finger movable with said thumb-piece and extending longitudinally of and within said casing, an insulated contact member in the form of a ring with which said finger may engage, a second contact member in the form of a yielding plate housed within said threaded metall cap and movable therewith to make or break contact with said contact ring member, an insulating disk -whereon said contact member is secured, a coiled spring held by said contact plate in integral loops thereof and a spring blade carried by said disk, said ring member having a notch to receive said blade 'and form therewith a lock to hold said cap against accidental turning when said contact members have been separated-t0 prevent accidental lighting of the lamp.

10. In a battery hand lamp, the combination of a tubular casing of insulating material, a threaded Ymetal sleeve on each end thereof, a metal cap threaded to one of said sleeves, a collar threadedto the other of said sleeves, a vlens and a retiector clamped between said collar and its sleeve, a lamp threaded into said reflector, a batterywithin said casing and having one terminal contactingwith the inner terminal of said lamp, and switch mechanism between the other terminal of said battery and said reflector', said mechanism. comprising a conductin strip contacting with said reflector, a :fatte: plate mounted on said tubular casing about midway of its length and connected to said strip, a thumb-piece slidingly mounted on said plate, a contact linger movable with said thumb-piece and extending longitudi nally of and within said casing, an in elated contact member in the form ot a ring with which said linger may engage, a second contact member in the form et' a yielding plate housed within said threaded metal cap and movable therewith to make or break Contact with said contact ring member, an insniating disk whercon said contact plate is secured by integral tangs, a second insnlating disk between said tangs and said metal cap, a coiled spring held by said Contact plate in integral loops, and a spring blade carried by said first-named disk, said ring member haring a notch to receive said. blade and form a lock to hold said cap against accidental turning when said contact me1nbers have been separated to prevent acci*- dcntal lighting of the lamp.

v ln testimony whereof' 'I alix my signature.

CA RL HA MBU E C HEN. 

